Article including silicon carbide and method of manufacturing same

Abstract

Provided is an article that includes silicon carbide as a main component and that has sufficient mechanical strength while manufactured by a three-dimensional shaping technology. The article that includes silicon carbide as a main component includes: silicon carbide; a metal boride having a melting point lower than a sublimation point of silicon carbide; and metal silicon.

What is claimed is: 
     
         1 . A method of manufacturing an article comprising:
 forming a shaped object by repeating:
 forming a powder layer through use of a mixed powder of a powder containing silicon carbide and a powder containing a metal boride having a particle diameter smaller than that of silicon carbide and a melting point lower than a sublimation point of silicon carbide; and 
 simultaneously scanning and irradiating the formed powder layer with an energy beam based on shape data of an object to be shaped to melt and solidify the mixed powder; and 
   further impregnating the shaped object with metal silicon.   
     
     
         2 . The method according to  claim 1 , wherein the metal boride comprises at least one selected from the group consisting of chromium diboride, vanadium diboride, and chromium monoboride. 
     
     
         3 . The method according to  claim 2 , wherein the metal boride is chromium diboride, and
 wherein the article has a molar ratio between silicon carbide and chromium diboride, silicon carbide:chromium diboride, of from 90:10 to 35:65.